/**********************************************************************************
 ***
 ***    Screencasting Teaching System C++ Library
 ***    Copyright (C) 2011  Jiri Novak <jiri.novak@petriny.net>
 ***                        Wadi Jalil Maluf <wadijm@gmail.com>
 ***
 ***    This file is part of the Screencasting Teaching System C++ Library.
 ***
 ***    This library is free software; you can redistribute it and/or modify
 ***    it under the terms of the GNU General Public License as published by
 ***   the Free Software Foundation; either version 3 of the License, or
 ***    (at your option) any later version.
 ***
 ***    This library is distributed in the hope that it will be useful,
 ***    but WITHOUT ANY WARRANTY; without even the implied warranty of
 ***    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 ***   GNU General Public License for more details.
 ***
 ***    You should have received a copy of the GNU General Public License
 ***    along with this library; if not, write to the Free Software
 ***    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 ***
 *********************************************************************************/

#include "lesson.h"
#include "user.h"
#include "../comm/lock.h"

/**
 *
 */
Lesson::Lesson() {
  playing=false;
}

/**
 *
 */
Lesson::~Lesson() {
  for (std::list<AttachedFile*>::iterator it = attachedFiles.begin(); it != attachedFiles.end(); it++) {
      delete *it;
  }
  for (std::list<User*>::iterator it = students.begin(); it != students.end(); it++) {
      delete *it;
  }
  for (std::list<User*>::iterator it = instructors.begin(); it != instructors.end(); it++) {
      delete *it;
  }
}

bool Lesson::isSubscribed(User* user){
  for (std::list<User*>::iterator it = students.begin(); it != students.end(); it++) {
      if((*it)->getId()==user->getId())
        return true;
  }
  for (std::list<User*>::iterator it = instructors.begin(); it != instructors.end(); it++) {
      if((*it)->getId()==user->getId())
        return true;
  }
  return false;
}

void Lesson::setStudentListening(User* user,bool listening){
  Lock l(mutex);
  for (std::list<User*>::iterator it = students.begin(); it != students.end(); it++) {
      if((*it)->getId()==user->getId())
        (*it)->setListeningLesson(listening);
  }
}

void Lesson::start(){
  Lock l(mutex);
  playing=true;
  for (std::list<User*>::iterator it = students.begin(); it != students.end(); it++) {
          (*it)->setListeningLesson(true);
    }
}
void Lesson::stop(){
  Lock l(mutex);
  playing=false;
  for (std::list<User*>::iterator it = students.begin(); it != students.end(); it++) {
           (*it)->setListeningLesson(false);
     }
}
bool Lesson::isPlaying()const{
  return playing;
}
